Age of Not Believing in God, The (1999) - Cologne, Germany
Collection of Museum Ludwig Köln
Doctor Undergoing Treatment, A
Commissioned by Academie de France a Rome. No longer extant
Dragon Sight Sees Vienna: Project for Extraterrestrials No. 32
Commissioned by Kunsthalle Wien for the exhibition Cai Guo-Qiang: I Am the Y2K Bug, November 4, 1999–February 27, 2000.
Drawing for Dragon Sight Sees Vienna: Project for Extraterrestrials No. 32
Private collection, Hong Kong
Firecrackers for the Opening of S.M.A.K.
Commissioned by S.M.A.K. (Stedelijk Museum voor Actuelle Kunst), Ghent
Salute
Commissioned by the Quiet in the Land and the Museu de Arte Moderna da Bahia, Salvador da Bahia
Skylight
Commissioned by Städtische Galerie Nordhorn, for the public art project Kunstwegen
Venice's Rent Collection Courtyard
Commissioned by the 48th Venice Biennale, artwork not extant